In 1948 Arabs who at that point didn't differentiate between themselves as Palestinians, Jordanians, Egyptians, etc. ( check the family names origins) waged a continuous wars against Jews who decided and were found entitled to reestablish their own state. You rightfully pointing that Arabs want to reclaim. But what are they actually trying to reclaim it's not a country that they never had in Palestine but the territory. I don't want to repeat again and again that the numbers of Jews who had fled their homeland Arab countries in 1948 because of the Arab rulers are higher then those of the Arabs who fled Palestinian territory because of the same Arab rulers. So if you want to talk about justice for everyone stop excusing the baby throat cutters and suicide bombers. Barbarism will never help you to achieve your goal, not in this century. Come and negotiate. You know that Israel is waiting for the partner. But one who made a right step was killed. And the others don't want to follow his example. Jews understand this too.
PLO official: Reports about Abbas' resignation from political life very premature (Haaretz)